Looks good. That should be more than enough strands. Did you pad the loops? Not sure why you think it is too thin. If it is nock fit. You can pad the serving,use a thicker serving,Teflon tape under the serving,and even double serve. What ever you need for good nock fit. On the length when you twist the second loop double it back forming the loop then measure the length. Add a little more twist in the loop,or un- twist it and start the twist a little sooner or later as needed. Measure the string stretched out and even then allow a little for stretch as your twists pull tighter, under tension. Hope that helps. >>>----> Ken